Add skills tools and enhance model integration

- Introduced new skills tools: `skills_categories`, `skills_list`, and `skill_view` in `model_tools.py`, allowing for better organization and access to skill-related functionalities.
- Updated `toolsets.py` to include a new `skills` toolset, providing a dedicated space for skill tools.
- Enhanced `batch_runner.py` to recognize and validate skills tools during batch processing.
- Added comprehensive tool definitions for skills tools, ensuring compatibility with OpenAI's expected format.
- Created new shell script `test_skills_kimi.sh` for testing skills tool functionality with Kimi K2.5.
- Added example skill files demonstrating the structure and usage of skills within the Hermes-Agent framework, including `SKILL.md` for example and audiocraft skills.
- Improved documentation for skills tools and their integration into the existing tool framework, ensuring clarity for future development and usage.

configs/test_skills_kimi.sh

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+# Test skills tool with Kimi K2.5
+# Usage: ./configs/test_skills_kimi.sh "your query here"
+# Example: ./configs/test_skills_kimi.sh "List available skills and show me the vllm skill"
+
+# Default query if none provided
+QUERY="${1:-List all available skills. Then show me the axolotl skill and view one of its reference files.}"
+
+echo "🎯 Testing Skills Tool with Kimi K2.5"
+echo "📝 Query: $QUERY"
+echo "=" 
+
+python run_agent.py \
+  --enabled_toolsets=skills \
+  --model="moonshotai/kimi-k2.5" \
+  --base_url="https://openrouter.ai/api/v1" \
+  --max_turns=10 \
+  --verbose \
+  --save_sample \
+  --query="$QUERY"